Automatic stop mechanism.



V. HOXIE. AUTOMATIC STOP MECHANISM.

APPLICATION FILED JAN. 22, 1909.

943,41 1, Patented Dec. 14, 1909.

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J 1 55 V W|TNESSES.-' v INVENTOR. 09 W W 5 1 M MflMQZZ 5/" V. HOXIE.

AUTOMATIC STOP MECHANISM.

APPLICATION IILED JAILZZ, 1909.

Patented Dec. 14, 1909.

2 SHEETS-SHEET 2.

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C m Mow/W g M W VERNON HOXIE, OF ADRIAN, MICHIGAN.

AUTOMATIC sror'MEcHAnrsM.

Specification of Letters Patent. Patented Dec, 14, 1909.

Application filed January 22, 1909. Serial No. 473,704.

State of Michigan, have invented a certain.

new and useful Automatic Stop Mechanism; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same,- reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification.

My invention relates to automatic stop mechanism for use in connection with looms,

barbed wire making machines, or other machines into which a wire, thread or'the like is fed and which it is desired to automatically stop when a predetermined length of such wire or thread has been fed thereto.

The object of my invention is the pro- ,vision of an improved apparatus of this class, which is simple, strong and durable in its construction, positive in its action and highly eflicient in its operation.

The operation, construction and arrangement of the parts of the invention are fully described in. the following specification,and a preferred embodiment thereof illustrated in the accompanying drawings, in which,--

Figure 1 is a plan View of the mechanism comprising my invention. Fig. 2 is a front elevation thereof. Fig. 3 is a vertical section on the line wa: in Fig. 1,- and Fig. 4 is a vertical section on the line a:m in Fig. 1.

Referring to the drawings, 1' designates the portion of the frame of a machine with which the stop mechanism is associated, and 2 a drive-shaft, which is journaled transrverjsely of the frame in suitable bearings 3 provided therefor. A drive-pulley 4 is loosely carried by the shaft 2 near one end thereof, and associated therewith is a suitable clutch,.preferably of the friction-type, which is keyed to the shaft and caused to engage with the pulley when the conical end of a sliding-sleeve 5, which is feathered to the shaft, is moved into spreading engagement with the outer ends of the clutcharms 6. A. controlling lever 7 is fulcrurned to a standard 8 at one side of the shaft 2 and is connected to' the sleeve '5 in the usual or any suitable manner. The shaft 2 carries a feed-roll 9 intermediate its bearings, which cooperates with a companion feed-roll 9,

that is carried by a superimposed shaft 10, to feed a wire or thread a into the associated machine. The shaft 10 is journaled in bearing-blocks 11,.which are mounted for vertical adjustment in boxes. or standards 12 rising from the frame 1, thus adaptingthe feed-rolls for relative adjustment as the gage of the wire or other conditions may require. Meshing gears 13, 13 on the shafts 2 and 10 cause said shafts to have uniform rotation.

Disposed either in advance or to the rear of the feed-rolls 9, 9', is a set of cooperating wire or thread gripping-rolls 14, let, one of which, the upper one in the present case,

may be termed the measuring wheel and is Journaled on a stub-shaft 22, projecting from the standard 17 at right-angles to the worm-shaft 15, is a worm-gear 23, which meshes-with and is driven by the worm 18.

A pin 24 projects frdm one side of the gear 23 near its periphery, and is intended at each revolution to engage the upper end of a lever 25 and effect a rocking thereof, This lever is fulcrumed inthe vertically forked end of a bracket 26 attached to the frame and has its lower end angled or provided with a spur 27, which projects from the side thereof opposed to the direction of movement of the lower end of the lever' when its upper end is struck by the pm 24. A spring 28 is carried by a pm 29 pro ecting from the side of its bracket 26 and has its legs acting on the bracket and on a pm 30 projecting from the lower end of the lever 25 in such manner as to normally maintain the lever imposition for its spur 27 to project from the side of the bracket, as shown in Figs 2 and 4. The spur 27, when in normal position, is intended to form a support for a weight 31, which is provided at its-top with suitable means, such as a link or loop 32, for loosely engaging over the spur 'to suspend the weight therefrom. This weight is attached to one end of a'cord 33, which extends upwardly therefrom over a sheave 34, .which is carried at the outer end of an arm 35 projecting from the standards 16,16, and has its other end attached to the lever 7 in such manner that a pull on the cord 33, will effect a throwing out of the clutch when in engaged position, as shown. It is thus apparent that a releasing of the link or loop 32 from the spur 27, due to a. drawin of such spur within the space between the urcations of the bracket 26, when the lever is oscillated by contact of the pin 24 therewith, will permit the weight 31 to drop therefrom by gravity and when it has dropped sufiiciently to take up the slack in the cord, to then effect a sudden jerk or pull on the cord of suflicient strength to throw the lever 7 to release the clutch. I wish it understood, however, that I do not restrict myself to the use of a Weight for throwing the clutch out when the lever 25 is moved, as any othersuitable means which is capable of being released from the lever 7. or its equivalent, when moved for such purpose and of acting on the clutch to throw it out of engagement with its cooperatin member when so released, may be employe It is evident that as the lever 25 is tripped once at each revolution of the worm-gear 23, the length of the wire or thread a which is fed to the machine at each feeding operation will depend on the size of the measuringwheel 14, and the number of teeth on the worm-gear 23, and that to charge the feed it is only necessary to changethe size of such roll or the number of teeth on the worm-gear, or to provide the Worm-gear with a plurality instead of one pin 24 for contact with the lever 25.

36, 36 designate guard-arms, which project upwardly from the arm on either side of the lower edge of the measuringwheel 14 to prevent the wire a from leaving such roll. i

I wish it to be understood that my invention is not limited to any specific arrangement and construction of parts, except in so far as such limitations are specified in the claims.

Having thus described myinvention, what I claim as new and desire to secure by- Letters Patent, is,

1. The combination with means for feeding a wire or similar article, and a controllin clutch therefor, of a rotatable member which is actuated by the movement of the article being fed, a pin projecting from such member, an oscillatory element which is engaged and oscillated by the pin at each revolution thereof, means normally holding said member in one position, a weight capable of being supported by said element when in normal position and to be released therefrom when the element is moved,and connection between the clutch andsaid weight which is adapted to be moved to disengage the clutch when the weight is released,

2. In combination, a set of feed-rolls, a drive-shaft for one of said rolls, a drivepulley loosely carried by said shaft, a clutch,

associated with the shaft and pulley, a wheel having rotation communicated thereto by the article fed between said rolls, a worm-shaft carrying said wheel, a worm-gear associated with said shaft and having a lateral projection on one side thereof, a member movable by said projection at each revolution of the gear, a weight capable of being su ported by said member and released there rom by a movement of the member whereby to permit it to drop by gravity, and connection between the weight and clutch for disengagin the clutch and pulley when the weight is re eased.

In testimony whereof I have hereunto signed my name to this specification in the presence of two subscribing witnesses.

VERNON HOXI E. Witnesses:

W. S. TUDOR, J. WJSWEET. 1 

